Decimal.ToSByte(Decimal) Decimal.ToSByte(Decimal) Decimal.ToSByte(Decimal) Decimal.ToSByte(Decimal) Method

定義

重要

此 API 不符合 CLS 規範。

符合 CLS 規範替代方案
System.Decimal.ToInt16(Decimal)

將指定的 Decimal 值轉換為對等的 8 位元帶正負號整數。Converts the value of the specified Decimal to the equivalent 8-bit signed integer.

public:
 static System::SByte ToSByte(System::Decimal value);
[System.CLSCompliant(false)]
public static sbyte ToSByte (decimal value);
static member ToSByte : decimal -> sbyte
Public Shared Function ToSByte (value As Decimal) As SByte

參數

value
Decimal Decimal Decimal Decimal

要轉換的十進位數字。The decimal number to convert.

傳回

8 位元帶正負號的整數,等於 valueAn 8-bit signed integer equivalent to value.

例外狀況

value 小於 MinValue 或大於 MaxValuevalue is less than MinValue or greater than MaxValue.

範例

下列範例會使用ToSByte方法,將十進位數轉換成SByte值。The following example uses the ToSByte method to convert decimal numbers to SByte values.

using System;

class Example
{
   public static void Main( )
   {
      decimal[] values = { 123m, new Decimal(78000, 0, 0, false, 3),
                           78.999m, 255.999m, 256m,             
                           127.999m, 128m, -0.999m,              
                           -1m,  -128.999m, -129m };

      foreach (var value in values) {
         try {
            sbyte number = Decimal.ToSByte(value);
            Console.WriteLine("{0} --> {1}", value, number);       
         }
         catch (OverflowException e)
         {
             Console.WriteLine("{0}: {1}", e.GetType().Name, value);
         }   
      }
   }
}
// The example displays the following output:
//     78 --> 78
//     78.000 --> 78
//     78.999 --> 78
//     OverflowException: 255.999
//     OverflowException: 256
//     127.999 --> 127
//     OverflowException: 128
//     -0.999 --> 0
//     -1 --> -1
//     -128.999 --> -128
//     OverflowException: -129
Module Example
   Public Sub Main()
      Dim values() As Decimal = { 78d, New Decimal(78000, 0, 0, false, 3), 
                                  78.999d, 255.999d, 256d,
                                  127.999d, 128d, -0.999d, 
                                  -1d,  -128.999d, -129d }

      For Each value In values
         Try
            Dim number As SByte = Decimal.ToSByte(value)
            Console.WriteLine("{0} --> {1}", value, number)       
         Catch e As OverflowException
             Console.WriteLine("{0}: {1}", e.GetType().Name, value)
         End Try   
      Next
   End Sub
End Module
' The example displays the following output:
'     78 --> 78
'     78.000 --> 78
'     78.999 --> 78
'     OverflowException: 255.999
'     OverflowException: 256
'     127.999 --> 127
'     OverflowException: 128
'     -0.999 --> 0
'     -1 --> -1
'     -128.999 --> -128
'     OverflowException: -129

備註

您也可以Explicit使用指派Decimal運算子,將值轉換成8位帶正負號的整數。You can also convert a Decimal value to an 8-bit signed integer by using the Explicit assignment operator. 因為運算子會執行縮小轉換,所以您必須在中C#使用轉型運算子或 Visual Basic 中的轉換函數。Because the operator performs a narrowing conversion, you must use a casting operator in C# or a conversion function in Visual Basic.

適用於

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